I come from an acting background and the dogma that I had entering any audition was to give more the first time.
What do I mean when I say “give more”? I mean overdoing it a little, hamming it up, being more emotional, more passionate, more vocal than what the script calls for. I put it all on the plate — like at an all-you-can-eat buffet during the last call — and then letting some spill off. I do this because it is easier for the directors, producers, and fellow actors to tell me to dial it back as opposed to adding more after.
If I come into the scene with subtleties and that is not what the director wants, then it is more challenging for me to increase the levels or expand the emotions, especially on the spot. It’s always easier to cut or reduce than to fill or to add, especially on the spot. Always give more the first time.
Of course, this theory can be applied to many aspects of life and other professions. As a writer, I will give my editors more. If they ask for 500 words, I’ll give 600. From there, they can trim. You can’t style hair that isn’t there, and you can cut what is not written.
For more tips on editing your writing, check out this YouTube playlist: Editing Your Epic Novel